The service is fully available during the re-generation of the thumbnails, without restriction, but you may notice that your thumbnails are replaced by generic “file type” icons. This is no cause for concern, and simply means the system hasn’t fully refreshed your account yet. We expect everything to neatly finish over the weekend.
Thank you for your continued support and your patience!
Update: fluxiom is just back online after a scheduled maintenance and is now back with big improvements (more details soon).